Special fixture for milling long and thin axle parts

Abstract

The invention discloses a special fixture for milling long and thin axle parts. A three-jaw chuck is fixedly connected with the upper surface of a base of the fixture and is fixedly connected with an inner ring of a bearing, the outer ring of the bearing is fixedly connected with a support arm, the bottom of the support arm can rotate around the bearing and support in a round sliding chute by taking the three-jaw chuck as the center of a circle on the upper surface of the base of the fixture in a sliding manner, a support arm is provided with a handle, a handle box, a hand wheel handle and a tailstock, the handle box is connected with the hand wheel handle and the tailstock, the hand wheel handle controls the tailstock to longitudinally move along the support arm, the tailstock is connected with a tip block, the tip block is connected with a tip locking handle, a tip is fixed on the tip block and realizes clamping by combining a tapered hole on the end face of a part, and the tip locking handle finely adjusts the tip to longitudinally shift along the support arm and lock a tip device. The special fixture disclosed by the invention can effectively slow down processing deformation, and the support arm is prevented from rotating and interfering with a milling cutter, thus the machining accuracy of milling on the long and thin axle parts can be obviously improved, the cost can be reduced and the productivity can be improved.

Description

technical field [0001] The invention relates to a special fixture for milling machines, which is suitable for clamping slender shaft parts on common milling machines. Background technique [0002] During the processing of slender shaft parts, due to their poor rigidity, under the action of cutting force and cutting heat, deformation is easy to occur, especially bending deformation, which easily destroys the accuracy of the relative movement of the tool and the part. It affects the machining accuracy of the parts, and also causes vibration of the process system, which further affects the machining accuracy and surface quality of the parts. [0003] At present, on lathes and some special milling machines, the technology of clamping and processing slender shaft parts is relatively mature, and there are many corresponding fixtures, but for the processing of small batches of slender shaft parts, the prerequisite for using ordinary milling machines Especially under the premise of...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiency that the existing technology cannot guarantee the machining accuracy of parts, the present invention provides a special milling machine fixture, which can ensure the machining accuracy of parts and prevent the milling of slender shaft parts from interference between fixtures, tools and machine tools

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